A new perspective on auxin perception

A comparison of the effects of 1,4-naphthoquinone and 2-hydroxy-1,4-naphthoquinone (lawsone) on indole-3-acetic acid (IAA)-induced growth of maize coleoptile cells

“…2002). ABP1 is involved in: regulation of the membrane potential and ion fluxes; elevation in cytosolic Ca 2+ concentration (Shishova and Lindberg 2010) and changes in the cytoskeleton (Nagawa et al 2012), in the vesicular trafficking (Robert et al 2010), in the cell division and expansion (Braun et al 2008).…”

Auxin-induced leaf blade expansion in Arabidopsis requires both wounding and detachment

“…The principle IAA receptor proteins have been identified as TIR1 29,30 and related AFB1-3 proteins 31 which function to accelerate ubiquitin mediated removal of specific transcription repressor proteins that, in turn regulate the expression of genes associated with auxin-response DNA domains. 1 There is, however, considerable evidence for the existence additional receptors 32 including auxin-binding protein 1 (ABP1). Though overexpression of ABP-1 has been shown to increase cell expansion in tobacco leaf strips 18 and conditional repression of ABP-1 in Figure 6.…”

Proton pump and plant cell elongation

“…This protein has a very intriguing history. For quite a long period, beginning in the 1980s, it was thought to be a part of the auxin receptor at the plasma membrane (see for reviews: Shishova and Lindberg, 2010;Grones and Friml, 2015). This is a 22-kDa protein highly conservative over plant species, with 98% representation in the endoplasmic reticulum and minor (2%) anchoring to the plasma membrane.…”